Mayfly nymph, emerger, dun, and spinner life stages filmed underwater as trout see them. Clingers, crawlers, burrowers and swimmer mayflies are profiled for the fly fisherman, aquatic ecologist, student, and budding entomologist to see, for the first time, in their natural state. This chapter 2 from Ralph and Lisa Cutter's "Bugs of the Underworld" (less info)